TY  - BOOK
AU  - Lofts, Brian.
TI  - Animal photoperiodism
T2  - Institute of Biology Studies in biology
SN  - 071312430x
AV  - QP82.2.L5 L6
U1  - 591.17 
PY  - 1970///
CY  - London
PB  - Arnold
KW  - Photoperiodism
N1  - Includes bibliographical references
ER  -